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Old 08-10-2012, 15:09   #24
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answer: Solution of identify nokia phone shorting

check shoting in nokia n-80....................


imp*****to check shoting in n-80 first remove flex slider from main pcb if ur shoting is gone then there is shoting is in ur uper display portion because there are some ic in upper portion which got +b from batery. through flex..*****



1....remove this COIL mark in (1) if u want to check the shoting of gsm pf .......remove the coil and ur shoting is gone then there is shoting in ur gsm pf .......


2..remove this coil mark in (2)..if u want to check rf ic is short because rf ic also got +b volt from battery....


3....remove this coil mark in (3) if u want to check the shoting of wcdma pf and wcdma smps ic .......remove the coil and ur shoting is gone then there is shoting in ur wcdma pf and wacda smps ic.......


4..remove this ic n4201 ape regulator mark in (4)..if u want to check the shoting is cause by this remove it to check shoting is gone or not....this ic make volt for ape flash....


5..remove this ic mark in (5)..if u want to check smps ic n4200.. ..this ic make v corea for omap ic and rap remove ic to check shoting is gone or
not....


6..remove bluetooth module mark in (6)... tocheck shoting ...because it got +b from batery.....


7...remove these three ic mark in (7).....step by step these all three ic make volt for walan ic (wifi) ......remove these to check shoting is gone or not.....because these ic got +b from batery......


8...remove ic n3500 mark in (8)....it is for memory card ....this ic make volt for memory card..........


9...remove this ic n6504 mark in (9).. this ic make volt for camera (2.8v) remove this if u want to check the shoring cause by this ic....because this ic got +b from batery......


10....remove these ic n6501 and n6500 mark in (10).. thise ic make volt for camera .... remove this if u want to check the shoring cause by this ic....because this ic got +b from batery......



11....remove this ic mark in (11)..if u want to check the shoring cause flash light driver ic n6502 ....because this ic got +b from batery....



12...remove this n4405 mark in (12)....this ic make volt for level shifter ic for camera...... remove this if u want to check the shoring cause by this ic....because this ic got +b from batery......



13...at end remove betty and avilma ic to check shoting is gone or not.....



all the component which are mark in pink colur these all are coils and resistance these are place in series and +b of batery is gone throw them so if u remove the coil and resistance u not have to remove ic to check the shorting in pcb it save time and ur ic ....

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